Universal-joint puller



'J. A. KNOWLES.

UNIVERSAL JOIN-T FULLER.

APPLICATION FILED JUNE 18, 1919.

1 .337 233 Patented Apr. 20, 1920.

I NV EN TOR.

' ATTORNEY.

UNITE 1 gTATEti ATENT @FFTCE.

JAMES A. KNOXVLES, OF BALTIMORE, MARYLAND.

UNIVERSAL-JOENT PULLER.

Application filed June 18,

To all whom it may concern:

Be it known that 1, James A. KNowLns, a citizen of the United States, residing at Baltimore city, State of Maryland, have invented certain new and useful Improvements in Universal-Joint Pullers, of which the following is a specification.

This invention relates to devices for disengaging a shaft from a part through which said shaft passes where said part is tightly fitted on the shaft. The device has been designed more particularly for separating a shaft from one half of a universal joint, although it is not limited to such use but may, with equal facility, be employed for separating other parts or elements.

The invention has for its object to provide a very simple and highly eif'hcient device of the kind stated, and also one which can be easily applied and removed, and which is rapid and sure in operation.

The object. stated is attained by means of novel combination and arrangement of parts to be hereinafter described and claimed, and in order that .the same may be better understood, reference is had to the accompanying drawing forming a part of this specification.

In the drawing,

Figure 1 is a longitudinal section showing the manner in which the device is used; 2 is a cross-section on the line -2 of Fig. l, and

- Fig. 3 is an elevation of the device.

Referring specifically to the drawing, 5 denotes a fragment of a shaft which is flexibly connected to another shaft (not shown) by a universal joint The section of the joint to which the last mentioned shaft is connected is shown at 6, and it is tubular to receive said shaft. It will also be noted that the section 6 has a series of internal longitudinal ribs 7 by which the shaft is splined to the section to permit relative longitudinal movement of the parts but not a relative rotary movement, the parts turning together. As this is a'well known expedient, a further description thereof is not necessary, it being understood that the shaft is longitudinally grooved to seat the ribs 7.

The section of the universal joint which Specification of Letters Patent.

Patented Apr. 20, 1920.

Serial No. 305,115.

is attached to the shaft 5 is shown at 8. This shaft extends completely through the sec tlon so that one end is opposite the inner end of the section 6, and upon bringing the section 6 into alinement with the shaft 5 as shown in Fig. 1, after removal of the shaft of the section 6, the device can be applied for effecting the separation of the shaft 5 from the part 8.

The device for effecting the separation of the shaft 5 from the part 8 comprises a nut 9 and a screw 10 threaded therethrough. This nut is inserted into the hollow of the section 6 and in order to prevent it from turning therein, it is formed with splines 11 matching the splines 7 of said section. It will therefore be evident that if the nut is also held against longitudinal movement, the screw 10 will be caused to travel through the same when it is turned. The outer end of the screw has a head 12 for the application of a wrench or other tool to turn the same. The other end of the screw is adapt ed to abut against the end of the shaft 5 as shown in Fig. 1.

When the screw 10 is advanced toward the shaft- 5, the latter is forced back out of the universal joint section 8. The end thrust on the nut 9 is taken up by making its inner end in the shape of a collar 13. The .5 uneter of this portion of the nut is such that when it comes against the inner end of the section 8 it is prevented from entering the by the ends of the ribs or splines 7 of the latter. The nut will be inserted into the section 8 from the inner end thereof, its splined portion 11 freely entering the same, and when the collar 13 enthe end of the section, further inward movement of the nut is prevented. The nut can be inserted by turning the part 6 sidewise to expose its inner end.

The nut is now prevented from rotating in the section 6 and the engagement of the collar 13 with the inner end of the latter prevents further inward movement of the nut and thus takes up the end thrust when the screw 10 is operated as hereinhefore described to push the shaft 5 out of the universal joint section 8 nd durable, it can ly and quickly applied and removed,

and it will effect separation of the parts 5 one end of the nut having a collar to abut and 8 no matter how tightly they are wedged agalnst one end of the aforesaid member to together. take up the end thrust on the nut when the I claim: screw is advanced. 5 A device of the character described com- In testimony whereof I afiix my signature 15 prising a nut which is externally splined in the presence of two witnesses. to prevent its rotation in a member adapted JAMES A. KNOWLES. to receive and support the same, and a screw Vitnesses: threaded through the nut and adapted when E. VALTON BREWINGTON,

10 advanced to force one element off another, HOWARD D. ADAMS. 

